? [書(shū)] （突然） sudden;abrupt;unexpected: 倉(cāng) ～ hurriedly;hastily;all of a sudden；～ 斃 die suddenly ◆猝不及防 be caught off guard;be caught unprepared;be taken by surprise;be put off one's guard； 猝發(fā) burst； 猝滅[熄] quencher;quenching;extinction； 猝然 suddenly;abruptly;unexpectedly； 猝死 sudden death； 猝熄[滅] quenching;extinction